cpp2.cpp

来自「学习VC++的最基础程序」· C++ 代码 · 共 39 行

#include<iostream>
using namespace std;
class vector{
	int size;
	int *buffer;
public:
	vector(int s=100);
	int &elem(int ndx);
	void display();
	void set();
	~vector();
};
vector::vector(int s){
	buffer=new int[size=s];
	for(int i=0;i<size;i++)
		buffer[i]=i*i;
}
int& vector::elem(int ndx){
	if(ndx<0||ndx>=size){
		cout<<"error in index"<<endl;
		exit(1);
	}
	return buffer[ndx];
}
void vector::display(){
	for(int j=0;j<size;j++)
		cout<<buffer[j]<<endl;
}
void vector::set(){
	for(int j=0;j<size;j++)
		buffer[j]=j+1;
}
vector::~vector(){delete[]buffer;}
void main(){
	vector a(10);
	vector b(a);
	a.set();
	b.display();
}